The Firing Line Forums - View Single Post - Photo graphics for concepts and terminology.

dmazur · August 17, 2013, 12:34 AM

The Sierra reloading manual has a fairly good technical explanation of headspace, with lots of pictures of incipient case head separation, blown heads, etc. But no labeled drawing such as you suggest.

See post #24 in this thread for a good graphic -

http://thefiringline.com/forums/show...ight=cartridge

I'm not suggesting this is what you want, nor can I offer its use. I'm just linking to it as an example of a good graphic.

And, while the SAAMI drawings are wonderfully complete, there is so much information presented that a newcomer is probably quickly lost.

A few months ago, I was involved in a thread on this forum which attempted to delineate and define the various uses of the term "headspace". It was amazing how the term is misused. There is a correct definition, and yet there is a common use which is incorrect. And confusing.

The task of simplifying this to a few images sounds daunting.

How can it solve the problem of someone who has read that he has to have no more than 0.002" of headspace for optimum brass life, and then he sees the graphic labeled 1.634" - Headspace?

August 17, 2013, 12:34 AM	#3
dmazur Senior Member Join Date: July 5, 2007 Location: Pacific NW Posts: 1,310	The Sierra reloading manual has a fairly good technical explanation of headspace, with lots of pictures of incipient case head separation, blown heads, etc. But no labeled drawing such as you suggest. See post #24 in this thread for a good graphic - http://thefiringline.com/forums/show...ight=cartridge I'm not suggesting this is what you want, nor can I offer its use. I'm just linking to it as an example of a good graphic. And, while the SAAMI drawings are wonderfully complete, there is so much information presented that a newcomer is probably quickly lost. A few months ago, I was involved in a thread on this forum which attempted to delineate and define the various uses of the term "headspace". It was amazing how the term is misused. There is a correct definition, and yet there is a common use which is incorrect. And confusing. The task of simplifying this to a few images sounds daunting. How can it solve the problem of someone who has read that he has to have no more than 0.002" of headspace for optimum brass life, and then he sees the graphic labeled 1.634" - Headspace? __________________ .30-06 Springfield: 100 yrs + and still going strong Last edited by dmazur; August 17, 2013 at 12:43 AM.